The A. A., after having confirmed how the timely diagnosis of cancer of the Sigma-Rectum section is the result a complicated and articulate diagnostic iter, describe the advantages of using the ultrasonography-endoscopy. Therefore they relate their experience, comparing the outcome of this research with that of the TC images and above all with the histo-pathological surveys on the removed sechions. They conclude affirming that a higher percentage of the diagnostic care is a clear evolution in the correct pre-operating stage of these neoplasias.